<template>
  <li :class="{ completed: todo.done, editing: editing }" class="todo">
    <div class="view">
      <input
          :checked="todo.done"
          class="toggle"
          type="checkbox"
          @change="toggleTodo(todo)"
          style="left: 0px;"
      >
      <label @dblclick="editing = true" v-text="todo.text"/>
      <button class="destroy" @click="deleteTodo( todo )"/>
    </div>
    <input
        v-show="editing"
        v-focus="editing"
        :value="todo.text"
        class="edit"
        @keyup.enter="doneEdit"
        @keyup.esc="cancelEdit"
        @blur="doneEdit"
    >
  </li>
</template>

<script>
export default {
  name: 'Todo',
  directives: {
    focus(el, {value}, {context}) {
      if (value) {
        context.$nextTick(() => {
          el.focus()
        })
      }
    }
  },
  props: {
    todo: {
      type: Object,
      default: function () {
        return {}
      }
    }
  },
  data() {
    return {
      editing: false
    }
  },
  methods: {
    deleteTodo(todo) {
      this.$emit('deleteTodo', todo)
    },
    editTodo({todo, value}) {
      this.$emit('editTodo', {todo, value})
    },
    toggleTodo(todo) {
      this.$emit('toggleTodo', todo)
    },
    doneEdit(e) {
      const value = e.target.value.trim()
      const {todo} = this
      if (!value) {
        this.deleteTodo({
          todo
        })
      } else if (this.editing) {
        this.editTodo({
          todo,
          value
        })
        this.editing = false
      }
    },
    cancelEdit(e) {
      e.target.value = this.todo.text
      this.editing = false
    }
  }
}
</script>
